Financial Instruments - Derivative Financial Instruments and Hedging Activities (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Apr. 01, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Gains/(Losses) Reclassified from OCI into OID	$ (381)	[1],[2]	$ 300	[1],[2]
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Gains/(Losses) Reclassified from OCI into OID	(381)	[1],[2]	300	[1],[2]
All other, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Gains/(Losses) Recognized in OCI	0	[1],[2]
Derivative Financial Instruments Gains/(Losses) Reclassified from OCI into OID	0	[1],[2]	0	[1],[2]
Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Gains/(Losses) Recognized in OCI	(231)	[1],[2]	612	[1],[2]
Other Comprehensive Income (Loss) [Member] | Net Investment Hedging [Member] | Foreign currency long-term debt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non - Derivative Financial Instruments Gains/(Losses) Recognized in OCI	63	[1],[2]	50	[1],[2]
Other Comprehensive Income (Loss) [Member] | Net Investment Hedging [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Gains/(Losses) Recognized in OCI	123	[1],[2]	125	[1],[2]
Other Comprehensive Income (Loss) [Member] | Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Gains/(Losses) Recognized in OCI	(417)	[1],[2]	428	[1],[2]
Other Comprehensive Income (Loss) [Member] | All other, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Gains/(Losses) Recognized in OCI			9	[1],[2]
Other Income Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Gains/(Losses) Recognized in OID	142	[1],[3],[4]	(152)	[1],[3],[4]
Other Income Expense [Member] | Net Investment Hedging [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Gains/(Losses) Recognized in OID	(3)	[1],[3],[4]	(1)	[1],[3],[4]
Other Income Expense [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Gains/(Losses) Recognized in OID	(4)	[1],[3],[4]	(23)	[1],[3],[4]
Other Income Expense [Member] | Not Designated as Hedging Instrument [Member] | Foreign currency forward-exchange contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Gains/(Losses) Recognized in OID	149	[1],[3],[4]	(127)	[1],[3],[4]
Other Income Expense [Member] | All other, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Gains/(Losses) Recognized in OID	$ 0	[1],[3],[4]	$ (1)	[1],[3],[4]

[1] OID = Other (income)/deductions—net, included in Other deductions—net in the condensed consolidated statements of income. OCI = Other comprehensive income/(loss), included in the condensed consolidated statements of comprehensive income.

[2] Amounts presented represent the effective portion of the gain or loss. For derivative financial instruments in cash flow hedge relationships, the effective portion is included in Other comprehensive income/(loss)––Unrealized holding gains/(losses) on derivative financial instruments. For derivative financial instruments in net investment hedge relationships and for foreign currency debt designated as hedging instruments, the effective portion is included in Other comprehensive income/(loss)––foreign currency translation adjustments.

[3] Also includes gains and losses attributable to the hedged risk in fair value hedge relationships.

[4] There was no significant ineffectiveness for any period presented.